Stir sugar into pineapple guavas. Bring mixture to a full rolling boil (a boil that does not stop bubbling when stirred) on high heat, stirring constantly. Stir in pectin quickly.
1 pouch pectin (Certo) 8 (8oz.) canning jars with lids Wash jars, screw bands and lids in soapy water and boil them (except lids) for 5 min. Finely chop 4 cups of pineapple guavas. Stir sugar into pineapple guavas. Bring mixture to a full rolling boil (a boil that does not stop bubbling when stirred) on high heat, stirring constantly.
Remove from heat, skim, ladle into hot, clean jars and seal. Process in a boiling water bath for 5 minutes. Guava juice-wash 2 quarts of guavas, remove blossom end and cut into slices. Add water to cover, bring to a boil, and boil gently for 15 minutes. Strain through a jelly bag.
A tropical twist on strawberry jam using an unusual fall fruit known as pineapple guava. Slice the strawberries and extract the pulp from the guavas by cutting them in half and scooping it out with a spoon (this is the most time-consuming part of the process but if you only make a small batch, it won't take long at all).